Combustion-engine.



No. 811,744. PATENTED FEB. 6, 1906.

F. REIGHENBAGH.

COMBUSTION ENGINE. APPLICATION FILED M431. 1905.

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ITEM STATES nag'rnn'r Specification of Letters Patent.

Patented Feb.- 6, 1906.

Application filed March 9,1905. Serial Nn. 249,203.

To all whom it may concern: I

Be it known that I, FRITZ REICHENBAOH, a subject of the German-Emperor, residing at it Bismarckstrasse, Charlottenburg,-near Berlin, Germany, have invented new and useful Improvements in Internal-Combustion Engines, of which the following is a specification.

The present invention relates especially to combustion-engines of the four-cycle type. The four periods are as follows: first, the sucking in of the air second, the compression of the air; third, the blowing in of combustibles, ignition, and expansion, and, fourth, the blowing out ofthe combustion residuum, the four periods corresponding to a double rotation of the'crank and each of the periods requiring one. piston-stroke. I

This invention has special reference to that classof engines in which the combustibles are injected into the combustion -chamber while the air therein is under compression.

In theseengines an equal distribution of the ctnnbustibles is difficult, because Whenthe fuel is injected the air in the cylinder is already compressed, and this pressure opposes directly the distribution of the injected fuel.

In order to obtain a complete mixture of the'fuel with the already-compressed air notwithstanding the above difficulties, I give to the compression-chamber an annular form and arrange the fuel-injectors tangentially thereto, whereby even though the air in the compression-chamber be compressed to a high degree and be at rest when the fuel is injected the mixture will be carried around and around until the fuel is perfectly mixed with the air, this perfect mixture being obtained.

before the piston begins its return stroke. This highly-desirable result is augmented in proportion to the number of injectors employed.

The present invention is illustrated, by way of example, in the accompanying drawin s, in which- I igure 1 is a longitudinal section, and Fig. 2 a cross-section, of a portion of a double-acting engine.

Referring. to the drawings by reference characters, a is an annular combustion-chamberwhich is formed by the piston is and the cylinder-head (Z. Z) is a suction-Valve for air, and b is the exhaust-valve. The injection of the combustibles, which enter through the channel 9 by means of air under pressure entering by channel f, takes place'through one of severalinjectors c c in a direction approximatelytangential to the annular combustionchamber.

By the tangential injection of the combustibles in the annular combustion-chamber there is obtained their best distribution throughout the body of compressed'air, the air being thereby caused to rotate, as indicated by the arrows. In cylinders of larger diameter it is advantageous to arrange several injectors, as shown, these injectors being arranged at different points circumferentially.

Having thus described my invention, what I claim asnew, and desire to secure by Letters Patent, is

1. In an internal-combustion engine, the combination of a cylinder having a head, a piston, the piston and head forming when in juxtaposition an annular combustion-chamber, inlet and exhaustvalves, and a fuel-injector arranged tangentially to said annular chamber, for the purpose set forth.

'2. I11 a double-acting internal-combustion engine, the combination of a cylinder having a head, a piston carried by arod working through said head,.the adjacent faces of the piston and head being so shaped as to form an annular chamber when they are in juxtaosition, inlet and exhaust valves, and a fuellnjector arranged tangentially to said annular chamber, for the purpose set forth.

I11 testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRITZ REICHENBACH.

Witnesses WOLDEMAR HAUPT, HENRY HASPER. 

